Electronic discharge-tube controlled telephone switching system



W. A. CORNELL `E TAL Jan. 12, 1954 ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM 50 Sheet's-Sheet l Filed Sept. 7, 1949 QM, .UNK

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ELECTRONIC DISCHARGE-'TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 2 L//vs Luv/r FRAME o F/G. 2 .sscofvamr me .nr/Tale:

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A. ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 3 JUNCTO annu l RING/N6 CONNECTOR nso/s ren n//vam/c .3/0 cam/Ecran Rec/.STER nea/515.9 R/NG/NG R//val/vs R/,vc/Nc No.1 No. a c/ncu/r 2 RING/N6 CIRCUIT 2 24. cR/VELL M HALL E y up' L Y.; l ArronNEr Jan. 12, 1954 W, A, CORNELL ETAL 2,666,096

ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sepf. 7, 1949 50 Sheets-Sheet 4 IIIII IIHII A. CORNELL l. HALL INVENTORS Jan. 12, 1954 CORNELL r-:TAL 2,666,096

A. ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 5 w. A. CORNELL ,/.L/ALTL H cH N VENTORS c. a. KOECHL/NG FI A. K RN E), H.E. POWELL JWM@ A TTOPNEY Jan. 12, 1954 w A CORNELL ET AL 2,666,096

ELECTRONC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 6 An-I Jan. 12, 1954 W ELECTRONI A. CORNELL ETAL C DISCHARGE 2,666,096 -TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM 50 Sheets--SheerI 7 Filed sept, 7, 1949 N. HALL g. HEC/47' NVU/70H5 o. /roEcHL/Nc E A. Kong 5y PQ L1.

Arrnmffv Jan. 12, 1954 Filed sept. 7, 1949 w. A. CORNELL ET AL ELECTRONIC DISCHARGE-TUBE CONTROLLED 50 Sheets-Sheet 8 TELEPHONE SWITCHING SYSTEM m A. com/ELL H NVE/70H5 c. o. xoEcwL/Ns E A. maw H. E. POWELL A 7' TORNEY Jan 12, 1954 W. A. CORNELL ETAL 2,656,995-

ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 9 A. CORNELL HALL #i lV. G. HECHT C. D. KOECHL/NG E A KORN H. E. POWELL NVENTORS Jan. 12, 1954 w. A. CORNELL ET AL 2,666,096 ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet l0 E4 KORN hf ,F ELL Arron/vir Jan- 12, l954 w. A. CORNELL ET AL 2,666,096

ELECTRONIC DISCHRGETUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed sept. 7, 1949 5o sheets-sheet 11 WA. CORNELL NJ HALL G.H`CHT INVENTORS C.D.KOE6HL/NG FAI( , ORN HEP WELL "MMM W. A. CORNELL ET AL ELECTRONIC DISCHARGE Jan, 12, 1954 50 Sheets-Sheet l2 Filed Sept. 7, 1949 WACORNELL ML HALL 6. HE C H T /NVEN TORS C 1 KUECHL /NG FA. KORN HE. POWE L L BV 9W 4 T TORNEY Jan. 12, 1954 .A. CORNELL ET AL 2,666,096

ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept 7, 1949 50 Sheets-Sheet 13 'u CORNELL MI'J# a. NVENTRS 6.o. kosa/UNG m. kon/v H. E Pon/ELL Jan 12, 1954 W. A. CORNELL ETAL 2,666,096

ELECTRONIC DISCHARGE-TUBE coNTRoLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 14 POLAR/Z50 PULAR/ZED m A. com/ELL 'h-# INVENTUM c. a. koecHL/NG e A KORN H 5. POWELL KQ er A rra pA/Ey 12, 1954 W. A. CORNELL ET AL 2,666,096

ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM '7, 1949 50 Sheets-Sheet l5 `VJah.Y Y'

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W. A. CORNELL ET AL ELECTRONI Jan. 12, 1954 2,666,096

C DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM 50 Sheets-Sheet 16 Filed Sept. 7, 1949 WJ. CORNELL N./. HALL 6 r E M L N H L R TCN.: w www r skip. A H DA. acEH 00 W/ s T M A V v. w B

Jan. 12,1954 W A CORNELL ETAL 2,666,096

ELECTRONC I'DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 SheetSSheet 17 um. CORNELL 6 Name/Lf c, "W5/V T095 co. KoEcHL//vc FAKORN HE PWELL WAP-maggy Jan. 12, 1954 w. A. CORNELL ET AL ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM 50 Sheets-Sheet 18 Filed Sept. 7

WA, CORNELL NJ. HALL Whaha Jan. 12, 1954 Filed Sept. 7, 1949 A. ELECTRONIC DIS TELEPHONE CORNELL ET AL 2,666,096 CHARGE-TUBE CONTROLLED swlTci-IING SYSTEM 5o sheets-sheet 19 ATTORNEY Jan. 12, 1954 W. A. CORNELL ET AL 2,666,096 ELECTRONIC DISCHARGE-TUBE CONTROLLED TELEPHONE SWITCHING SYSTEM Filed Sept. 7, 1949 50 Sheets-Sheet 2O MA M/ LL HALL G. HECHT C. 0- KOECHLING E A. KORN H. E. FO ELL /N VEN TORS 

